直棱柱 by James Fields
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①本范例演示直棱柱的几何构造与性质;②涉及核心数学概念包括多边形、立体几何、角度计算;③构造过程中运用了点、交点、多边形、棱柱、角度、路径交点等 GeoGebra 命令与对象;④适合高中立体几何教学与学习,可用于理解棱柱的体积、表面积及空间性质。
GeoGebra 命令及参数
Point(yAxis) → AIntersect(xAxis, yAxis) → BPoint(xAxis) → CPolygon(A, B, C, D) → poly1, a, b, c, dPrism(poly1, h) → f, I, edgeAI, edgeBJ, edgeCK, edgeDL, edgeIJ, edgeJK, edgeKL, edgeIL, J, K, L, faceABJI, faceBCKJ, faceCDLK, faceADLI, faceIJKLAngle(A, B, J) → αIntersectPath(l, f) → poly2, poly4, Q, R, S, T, n, p, q, rIntersectPath(l, faceCDLK) → sIntersect(l, faceCDLK) → U, VIntersectPath(e, f) → poly3, W, Z, A_1, B_1, m, f_1, g_1, h_1